3D printing of polyvinylidene fluoride/photopolymer resin blends for piezoelectric pressure sensing application using the stereolithography technique

2019 ◽  
Vol 9 (3) ◽  
pp. 1115-1123 ◽  
Author(s):  
Hoejin Kim ◽  
Luis Carlos Delfin Manriquez ◽  
Md Tariqul Islam ◽  
Luis A. Chavez ◽  
Jaime E. Regis ◽  
...  
Keyword(s):  
3D Printing ◽  
Polyvinylidene Fluoride ◽  
Pressure Sensing ◽  
Sensing Application ◽  
Image Position

Abstract

scholarly journals Tunable In Situ 3D-Printed PVDF-TrFE Piezoelectric Arrays

Sensors ◽  
2021 ◽  
Vol 21 (15) ◽  
pp. 5032
Author(s):  
Alec Ikei ◽  
James Wissman ◽  
Kaushik Sampath ◽  
Gregory Yesner ◽  
Syed N. Qadri
Keyword(s):  
3D Printing ◽  
Polyvinylidene Fluoride ◽  
Vinylidene Fluoride ◽  
Mechanical Strain ◽  
Pressure Sensors ◽  
Strain Ratio ◽  
Ex Situ ◽  
Order Of Magnitude ◽  
3D Printed

In the functional 3D-printing field, poly(vinylidene fluoride-co-trifluoroethylene) (PVDF-TrFE) has been shown to be a more promising choice of material over polyvinylidene fluoride (PVDF), due to its ability to be poled to a high level of piezoelectric performance without a large mechanical strain ratio. In this work, a novel presentation of in situ 3D printing and poling of PVDF-TrFE is shown with a d33 performance of up to 18 pC N−1, more than an order of magnitude larger than previously reported in situ poled polymer piezoelectrics. This finding paves the way forward for pressure sensors with much higher sensitivity and accuracy. In addition, the ability of in situ pole sensors to demonstrate different performance levels is shown in a fully 3D-printed five-element sensor array, accelerating and increasing the design space for complex sensing arrays. The in situ poled sample performance was compared to the performance of samples prepared through an ex situ corona poling process.

On 3D printing of electro-active PVDF-Graphene and Mn-doped ZnO nanoparticle-based composite as a self-healing repair solution for heritage structures

2021 ◽  
pp. 095440542110609
Author(s):  
Vinay Kumar ◽  
Rupinder Singh ◽  
Inderpreet Singh Ahuja
Keyword(s):  
3D Printing ◽  
Polyvinylidene Fluoride ◽  
Nano Particles ◽  
Zno Nanoparticle ◽  
Self Healing ◽  
Fused Deposition ◽  
Crack Repair ◽  
3D Printed ◽  
Doped Zno ◽  
Mn Doped

Construction is the part of human activity which is directly linked to urbanization for moving ahead on the path of growth and prosperity. Construction activities in past centuries are now part of our precious heritage. The repair and maintenance of heritage structures are of great importance for present-day researchers. One of the most common damage these century-long constructions faces are in form of surface cracks. In the present study, investigations were performed for a 3D printing-based customized solution for crack repair and maintenance of heritage structures. In this study, polyvinylidene fluoride (PVDF) polymer was reinforced with graphene (Gr) and Mn-doped ZnO nano-particles to prepare a smart composite material for crack repair and restoration. The composite was successfully 3D printed on fused deposition modeling (FDM) based 3D printer after investigating its rheological, thermal, and mechanical properties. The in-house developed composite was tested for smart characteristics to use as a programmable solution for filling cracks. The piezoelectric property and dielectric constant of 3D printed disk-shaped composite (PVDF-Gr-Mn-ZnO) were obtained after DC poling (to be used as stimulus) of the functional prototype. The results of the study suggest that the electro-active nature, volumetric change, and charge storing capacity of the additively manufactured composite may be used practically to acquire the shape of cavity/crack present in the constructed wall and repair the damages that occurred in a heritage site. The photoluminescence (PLS) and atomic force microscopy (AFM) analysis was used to ascertain the properties of the prepared composite. Also, the results obtained from the morphological analysis are reported to support the outcomes of the research.

Studies on thermoplastic 3D printing of steel–zirconia composites

2014 ◽  
Vol 29 (17) ◽  
pp. 1931-1940 ◽  
Author(s):  
Uwe Scheithauer ◽  
Anne Bergner ◽  
Eric Schwarzer ◽  
Hans-Jürgen Richter ◽  
Tassilo Moritz
Keyword(s):  
3D Printing ◽  
Zirconia Composites ◽  
Image Position

Abstract

Development of Piezoelectric One Port Contour-Mode Microelectromechanical System Resonator for Biomedical Mass/Pressure Sensing Application

2019 ◽  
Vol 17 (12) ◽  
pp. 938-942
Author(s):  
Prasanna P. Deshpande ◽  
Rajesh S. Pande
Keyword(s):  
Zinc Oxide ◽  
Mobile Communication ◽  
Oxide Thin Film ◽  
Zinc Oxide Thin Film ◽  
Pressure Sensing ◽  
Global System ◽  
Microelectromechanical System ◽  
At Resonance ◽  
Sensing Application ◽  
Contour Mode

This paper presents zinc oxide one port contour-mode machined resonator operated under global system for mobile communication range of frequency. TheS11 value of –38.57 dB at resonance frequency of 882 MHz in average was observed. The phase shift of the device and voltage standing wave ratio were noted as 115° and 1.18 respectively, sufficiently adopted for radio frequency communication. The device has been optimized for 21 aluminum interdigited fingers patterned over zinc oxide thin film. Two electron beam and two optical lithography were processed for fabricating the devices. Our findings are expected to provide effective approach for realizing efficient biocompatible detector for biomedical mass/pressure sensing application.

3D printing of poly(ε-caprolactone)/poly(D,L-lactide-co-glycolide)/hydroxyapatite composite constructs for bone tissue engineering

2018 ◽  
Vol 33 (14) ◽  
pp. 1972-1986 ◽  
Author(s):  
Kazim K. Moncal ◽  
Dong N. Heo ◽  
Kevin P. Godzik ◽  
Donna M. Sosnoski ◽  
Oliver D. Mrowczynski ◽  
...  
Keyword(s):  
Tissue Engineering ◽  
3D Printing ◽  
Bone Tissue Engineering ◽  
Bone Tissue ◽  
Hydroxyapatite Composite ◽  
Image Position

Abstract

Generation of cell-laden hydrogel microspheres using 3D printing-enabled microfluidics

2018 ◽  
Vol 33 (14) ◽  
pp. 2012-2018 ◽  
Author(s):  
Sanika Suvarnapathaki ◽  
Rafael Ramos ◽  
Stephen W. Sawyer ◽  
Shannon McLoughlin ◽  
Andrew Ramos ◽  
...  
Keyword(s):  
3D Printing ◽  
Image Position ◽  
Hydrogel Microspheres

Abstract

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